74     struct TestCase {  in test_hmac()  struct
75         key: &'static str, // 32 bytes, hex-encoded  in test_hmac()
76         data: &'static [u8],  in test_hmac()
77         want: &'static str, // 32 bytes, hex-encoded  in test_hmac()
102     struct TestCase {  in test_hkdf()  struct
103         ikm: &'static str,  in test_hkdf()
104         salt: &'static str,  in test_hkdf()
105         info: &'static str,  in test_hkdf()
106         want: &'static str,  in test_hkdf()
198     struct TestCase {  in test_aes_gcm()  struct
199         key: &'static str,  in test_aes_gcm()
200         iv: &'static str,  in test_aes_gcm()
201         aad: &'static str,  in test_aes_gcm()
202         msg: &'static str,  in test_aes_gcm()
203         ct: &'static str,  in test_aes_gcm()
204         tag: &'static str,  in test_aes_gcm()
316     struct TestCase {  in test_ecdsa()  struct
317         key: EcVerifyKey,  in test_ecdsa()
318         msg: &'static str, // hex  in test_ecdsa()
319         sig: &'static str, // hex  in test_ecdsa()